Dell R420xr owner manual LCD Panel Features

Item	Indicator, Button, or	Icon	Description
	Connector
4	LCD menu buttons		Allow you to navigate the control panel LCD menu.
5	LCD panel		Displays system ID, status information, and system
			error messages. The LCD lights blue during normal
			system operation. The LCD lights amber when the
			system needs attention, and the LCD panel
			displays an error code followed by descriptive text.
			NOTE: If the system is connected to a power
			source and an error is detected, the LCD lights
			amber regardless of whether the system is
			turned on or off.
6	USB connectors (2)		Allow you to connect USB devices to the system.
			The ports are USB 2.0-compliant.
7	Hard drives		Up to four 2.5 inch hot-swappable SAS or SATA
			SSDs.

8Information tag

9NMI button

LCD Panel Features

A slide-out label panel which allows you to record system information such as Service Tag, NIC, MAC address, and so on as per your need.

Used to troubleshoot software and device driver errors when running certain operating systems. This button can be pressed using the end of a paper clip.

Use this button only if directed to do so by qualified support personnel or by the operating system's documentation.

The system's LCD panel provides system information and status and error messages to indicate when the system is operating correctly or when the system needs attention. See System Error Messages for information about specific error codes.

•The LCD backlight lights blue during normal operating conditions and lights amber to indicate an error condition.

•The LCD backlight is off when the system is in standby mode and can be turned on by pressing either the Select, Left, or Right button on the LCD panel.

•The LCD backlight remains off if LCD messaging is turned off through the iDRAC utility, the LCD panel, or other tools.

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